checkpoint: require_redis 显式 503 守卫——存储类接口（AI配置/在线/缓存/验证码）接线

- dependencies: require_redis 改标准 FastAPI 依赖（Depends(redis_getter)），Redis 不可用显式 503 而非 500/静默空数据
- AI配置 5 端点 / 在线监控 5 端点 / 缓存监控 6 端点切到 require_redis
- 免认证验证码端点（captcha/get、slider/complete）也接线：Redis 挂时返回 503 而非 500
- login/token/oauth 保留 redis_getter（服务层内联 503 守卫语义不变）

backend/app/api/v1/module_monitor/cache/controller.py

@@ -6,7 +6,7 @@ from redis.asyncio.client import Redis
 
 from app.api.v1.module_monitor.cache.schema import CacheInfoSchema, CacheMonitorSchema
 from app.common.response import ResponseSchema, SuccessResponse
-from app.core.dependencies import AuthPermission, redis_getter
+from app.core.dependencies import AuthPermission, require_redis
 from app.core.router_class import OperationLogRoute
 
 from .service import CacheService
@@ -16,7 +16,7 @@ CacheRouter = APIRouter(route_class=OperationLogRoute, prefix="/cache", tags=["
 
 @CacheRouter.get("/info", summary="获取缓存监控信息", response_model=ResponseSchema[CacheMonitorSchema], dependencies=[Security(AuthPermission(["module_monitor:cache:query"]))])
 async def get_monitor_cache_info_controller(
-    redis: Annotated[Redis, Depends(redis_getter)],
+    redis: Annotated[Redis, Depends(require_redis)],
 ) -> JSONResponse:
     result = await CacheService.get_monitor_statistical_info(redis=redis)
     return SuccessResponse(data=result, msg="获取缓存监控信息成功")
@@ -29,7 +29,7 @@ async def get_monitor_cache_name_controller() -> JSONResponse:
 
 
 @CacheRouter.get("/get/keys/{cache_name}", summary="获取缓存键名列表", response_model=ResponseSchema[list[CacheInfoSchema]], dependencies=[Security(AuthPermission(["module_monitor:cache:query"]))])
-async def get_monitor_cache_key_controller(cache_name: Annotated[str, Path(description="缓存名称")], redis: Annotated[Redis, Depends(redis_getter)]) -> JSONResponse:
+async def get_monitor_cache_key_controller(cache_name: Annotated[str, Path(description="缓存名称")], redis: Annotated[Redis, Depends(require_redis)]) -> JSONResponse:
     result = await CacheService.get_monitor_cache_keys(redis=redis, cache_name=cache_name)
     return SuccessResponse(data=result, msg=f"获取缓存{cache_name}的键名列表成功")
 
@@ -38,27 +38,27 @@ async def get_monitor_cache_key_controller(cache_name: Annotated[str, Path(descr
 async def get_monitor_cache_value_controller(
     cache_name: Annotated[str, Path(description="缓存名称")],
     cache_key: Annotated[str, Path(description="缓存键名")],
-    redis: Annotated[Redis, Depends(redis_getter)],
+    redis: Annotated[Redis, Depends(require_redis)],
 ) -> JSONResponse:
     result = await CacheService.get_monitor_cache_value(redis=redis, cache_name=cache_name, cache_key=cache_key)
     return SuccessResponse(data=result, msg=f"获取缓存{cache_name}:{cache_key}的值成功")
 
 
 @CacheRouter.delete("/delete/name/{cache_name}", summary="清除指定缓存名称的所有缓存", response_model=ResponseSchema[None], dependencies=[Security(AuthPermission(["module_monitor:cache:delete"]))])
-async def clear_monitor_cache_name_controller(cache_name: Annotated[str, Path(description="缓存名称")], redis: Annotated[Redis, Depends(redis_getter)]) -> JSONResponse:
+async def clear_monitor_cache_name_controller(cache_name: Annotated[str, Path(description="缓存名称")], redis: Annotated[Redis, Depends(require_redis)]) -> JSONResponse:
     result = await CacheService.clear_monitor_cache_by_name(redis=redis, cache_name=cache_name)
     return SuccessResponse(msg=f"{cache_name}对应键值清除成功", data=result)
 
 
 @CacheRouter.delete("/delete/key/{cache_key}", summary="清除指定缓存键", response_model=ResponseSchema[None], dependencies=[Security(AuthPermission(["module_monitor:cache:delete"]))])
-async def clear_monitor_cache_key_controller(cache_key: Annotated[str, Path(description="缓存键名")], redis: Annotated[Redis, Depends(redis_getter)]) -> JSONResponse:
+async def clear_monitor_cache_key_controller(cache_key: Annotated[str, Path(description="缓存键名")], redis: Annotated[Redis, Depends(require_redis)]) -> JSONResponse:
     result = await CacheService.clear_monitor_cache_by_key(redis=redis, cache_key=cache_key)
     return SuccessResponse(msg=f"{cache_key}清除成功", data=result)
 
 
 @CacheRouter.delete("/clear", summary="清除所有缓存", response_model=ResponseSchema[None], dependencies=[Security(AuthPermission(["module_monitor:cache:delete"]))])
 async def clear_monitor_cache_all_controller(
-    redis: Annotated[Redis, Depends(redis_getter)],
+    redis: Annotated[Redis, Depends(require_redis)],
 ) -> JSONResponse:
     result = await CacheService.clear_monitor_cache_all(redis=redis)
     return SuccessResponse(msg="所有缓存清除成功", data=result)